Wireless Telecommunication Services Industry Compensation Agreements

Director Compensation Policy, effective March 4, 2021 (Gogo Inc., Filed With SEC on May 6, 2021)

2021 Executive Deferred Compensation Interest Account Plan effective January 1, 2021 (UNITED STATES CELLULAR CORP, Filed With SEC on May 6, 2021)

Third Amendment to UScellular Executive Deferred Compensation Interest Account Plan (UNITED STATES CELLULAR CORP, Filed With SEC on February 18, 2021)

Fourth Amendment to UScellular Executive Deferred Compensation Interest Account Plan (UNITED STATES CELLULAR CORP, Filed With SEC on February 18, 2021)

Fifth Amendment to UScellular Executive Deferred Compensation Interest Account Plan (UNITED STATES CELLULAR CORP, Filed With SEC on February 18, 2021)

Sixth Amendment to UScellular Executive Deferred Compensation Interest Account Plan (UNITED STATES CELLULAR CORP, Filed With SEC on February 18, 2021)

Spok Holdings, Inc. Deferred Compensation Plan For Non-Employee Directors (Spok Holdings, Inc., Filed With SEC on February 18, 2021)

Temporary Director Compensation Policy Adjustment (effective April 28, 2020) (Gogo Inc., Filed With SEC on August 10, 2020)

Amendment No. 1, effective as of February 12, 2020, to the Compensation Term Sheet, effective as of April 29, 2018, by and between the Company and David R. Carey (T-Mobile US, Filed With SEC on May 6, 2020)

Director Compensation Policy, effective July 1, 2019 (Gogo Inc., Filed With SEC on March 13, 2020)

Compensation Term Sheet between Neville Ray and T-Mobile US, Inc., effective (T-Mobile US, Filed With SEC on February 6, 2020)

Telephone and Data Systems, Inc. Executive Deferred Compensation Program (Telephone & Data Systems Inc, Filed With SEC on December 12, 2019)

Amended Director Compensation Program effective as of May 1, 2013 (amended June 4, 2014 and further amended on June 1, 2015, June 16, 2016, June 13, 2017 and June 13, 2019) (T-Mobile US, Filed With SEC on July 26, 2019)

Compensation Term Sheet, dated as of April 28, 2018, for David R. Carey (T-Mobile US, Filed With SEC on July 26, 2019)

First Amendment to T-Mobile US, Inc. Non-Qualified Deferred Executive Compensation Plan (T-Mobile US, Filed With SEC on February 7, 2019)

First Amendment, dated as of April 28, 2018, to Updated Compensation Term Sheet, dated as of January 1, 2017, between T-Mobile US, Inc. and Michael Sievert (T-Mobile US, Filed With SEC on May 1, 2018)

TDS Amended and Restated Compensation Plan for Non-Employee Directors, dated December 7, 2017 (Telephone & Data Systems Inc, Filed With SEC on February 26, 2018)

U.S. Cellular Amended and Restated Compensation Plan for Non-Employee Directors (UNITED STATES CELLULAR CORP, Filed With SEC on November 8, 2017)

Amended Director Compensation Program effective as of May 1, 2013 (amended June 4, 2014 and further amended on June 1, 2015, June 16, 2016 and June 13, 2017) (T-Mobile US, Filed With SEC on July 20, 2017)

T-MOBILE US, INC. UPDATED COMPENSATION TERM SHEET FOR MICHAEL SIEVERT (T-Mobile US, Filed With SEC on April 24, 2017)

DIRECTOR COMPENSATION PROGRAM T-Mobile US, Inc. Effective as of May 1, 20131 (T-Mobile US, Filed With SEC on July 27, 2016)

DIRECTOR COMPENSATION PROGRAM T-Mobile US, Inc. Effective as of May 1, 2013 Amended June 4, 2014 and further amended on June 1, 2015. (T-Mobile US, Filed With SEC on July 30, 2015)

T-MOBILE US, INC. COMPENSATION TERM SHEET FOR MICHAEL SIEVERT (T-Mobile US, Filed With SEC on April 28, 2015)

DIRECTOR COMPENSATION PROGRAM T-Mobile US, Inc. Effective as of May 1, 20131 (T-Mobile US, Filed With SEC on July 31, 2014)

T-Mobile US, Inc. Non-Qualified Deferred Compensation Plan (As Amended and Restated Effective as of January 1, 2014) TABLE OF CONTENTS (T-Mobile US, Filed With SEC on February 25, 2014)

Compensation of Non-Employee Directors (currently consisting of all members of the Board of Directors other than Michael Small) (Gogo Inc., Filed With SEC on November 12, 2013)

DIRECTOR COMPENSATION PROGRAM T-Mobile US, Inc. Effective as of May 1, 2013 (T-Mobile US, Filed With SEC on May 2, 2013)

UNITED STATES CELLULAR CORPORATION EXECUTIVE DEFERRED COMPENSATION INTEREST ACCOUNT PLAN 2013 Election Form (UNITED STATES CELLULAR CORP, Filed With SEC on February 26, 2013)

SECOND AMENDMENT TO THE UNITED STATES CELLULAR CORPORATION EXECUTIVE DEFERRED COMPENSATION INTEREST ACCOUNT PLAN (UNITED STATES CELLULAR CORP, Filed With SEC on February 26, 2013)

EXECUTIVEDEFERRED COMPENSATION AGREEMENT (Telephone & Data Systems Inc, Filed With SEC on February 25, 2010)

TDSTELECOMMUNICATIONS CORPORATION EXECUTIVEDEFERRED COMPENSATION PROGRAM 20 Election Form (Telephone & Data Systems Inc, Filed With SEC on February 25, 2010)

TDSTELECOMMUNICATIONS CORPORATION EXECUTIVEDEFERRED COMPENSATION PROGRAM 20 Election Form and Post-2004Deferred Compensation Account PaymentElection Form* (Telephone & Data Systems Inc, Filed With SEC on February 25, 2010)

AMENDMENTNUMBER ONE TO TDSTELECOMMUNICATIONS CORPORATION EXECUTIVEDEFERRED COMPENSATION PROGRAM (Telephone & Data Systems Inc, Filed With SEC on February 25, 2010)

TDSTELECOMMUNICATIONS CORPORATION EXECUTIVEDEFERRED COMPENSATION PROGRAM (Amendedand Restated Effective January 1, 2008) (Telephone & Data Systems Inc, Filed With SEC on February 25, 2010)

Change of Election Form for Deferred Compensation Agreement [See Attached] (Telephone & Data Systems Inc, Filed With SEC on December 21, 2009)

Form of Deferred Compensation Agreement [See Attached] (Telephone & Data Systems Inc, Filed With SEC on December 21, 2009)

FIRSTAMENDMENT TO THE UNITEDSTATES CELLULAR CORPORATION EXECUTIVEDEFERRED COMPENSATION INTEREST ACCOUNT PLAN (UNITED STATES CELLULAR CORP, Filed With SEC on December 15, 2008)

TELEPHONE AND DATA SYSTEMS, INC. (the Company) Compensation Plan for Non-Employee Directors (the Plan) As Amended, Effective May 22, 2008 (Telephone & Data Systems Inc, Filed With SEC on November 5, 2008)

UNITEDSTATES CELLULAR CORPORATION EXECUTIVEDEFERRED COMPENSATION INTEREST ACCOUNT PLAN (Amendedand Restated Effective January 1, 2008) (UNITED STATES CELLULAR CORP, Filed With SEC on December 14, 2007)

UNITEDSTATES CELLULAR CORPORATION EXECUTIVEDEFERRED COMPENSATION INTEREST ACCOUNT PLAN 2008Election Form (UNITED STATES CELLULAR CORP, Filed With SEC on December 14, 2007)

Compensation Agreements in the Wireless Telecommunication Services Industry